5Base = declarative_base()
 6
 7
 8class User(Base): 9    __tablename__ = "users"
10    id = Column(Integer, primary_key=True)
11    username = Column(String, unique=True)

 8# Define a class for simulation environments
 9
10
11class SimulationEnvironment:12    def __init__(self, config_path):
13        # Load configuration from file
14        with open(config_path) as f:

 9# Define a class for system security monitoring
10
11
12class SecurityMonitor:13    def __init__(self, config_path):
14        # Load configuration from file
15        with open(config_path) as f:

 6# Define a class for device communication
 7
 8
 9class DeviceCommunication:10    def __init__(self, device_config):
11        # Initialize device communication protocol
12        self.protocol = device_config["protocol"]

 7# Define a class for data analysis and visualization
 8
 9
10class DataAnalytics:11    def __init__(self, data_path):
12        # Load data from file
13        self.data = pd.read_csv(data_path)